CONTINGENCIES (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
CONTINGENCIES
Litigation settlements and contingencies	$ 216,000	$ 246,000	$ 438,000	$ 4,994,000
Liability related to litigation settlements	500,000		500,000		3,100,000
North Carolina Department of Revenue | Low end of the range
INCOME TAXES
Estimated range of possible loss for 2006 through 2008 tax audit by North Carolina Department of Revenue	0		0
North Carolina Department of Revenue | High end of the range
INCOME TAXES
Estimated range of possible loss for 2006 through 2008 tax audit by North Carolina Department of Revenue	$ 3,600,000		$ 3,600,000